By: Brandon, Ethan, Jacob, Brianna, and Hannah

What is Protein?

Proteins is a large biological macromolecules consisting of amino acids.

Food has protein but foods with the most proteins are chicken, fish, and cheese.

Proteins is made of amino acids.

Proteins helps build muscle tissues and helps function the bodies tissue & organ.

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Monomer and Polymer

Amino acids are monomers that polymerize at ribosomes to form protein.

Proteins are Polymer

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Where can we find Proteins?

Food- Chicken, meat, peanuts, fish, cheese, rice, turkey, vegetables, etc.


Human body - Everywhere in the body

Every cells

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Functions of Proteins

1. Catalyze reaction (enzymes)

2. carry oxygen (hemoglobin)

3. build structure such as hair, nails, and horn.

4. Contract muscles

5. carry on active and facilitated transport.

6. makes up the cytoskeleton- microfilaments, microtubules

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The 4 Levels of Structure

The 4 structures are primary, secondary, tertiary, and quaternary.

Primary - Is a protein structure of numbers and identity of the component of amino acids in the protein. 20 different amino acids. Proteins build up from a set number of amino acids.

Secondary - The usual way in which the polypeptide chain is coiled is called the alpha helix, which interactions take place between groups 3-4 of amino acid. The beta pleated sheet is another regular secondary structure.

Tertiary - 3 dimensional structure of a protein polypeptide chains locked in place by other stronger bonds.

Quaternary - Not all proteins have quaternary level of structure. Consists of more identical sub-unit, not joined by strong bonds. (Hemoglobin) = oxygen

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